An interactive and comprehensive overview of how the human body works!From the beating heart to the thinking brain, this oversized, interactive book offers older readers a captivating look at the different systems that allow our bodies to function well. With more than 60 flaps, tabs, pop-ups, and rotating wheels, kids aged 8 to 12 can explore how organs work together, how babies are made, and how we grow from infancy to adulthood. Detailed illustrations and expert-reviewed content make this book the perfect introduction to anatomy, biology, and health science. Whether at home or in the classroom, it’s a powerful tool for learning and discovery. Key Features:• Supersized spreads with realistic, detailed illustrations• Over 60 interactive features to support deeper understanding• Covers anatomy, physiology, reproduction, and development• Great for science lessons and reference useIdeal for fans of the Ultimate Book™ series, including The Ultimate Book of Animals, The Ultimate Book of Planet Earth, and more!